Electro Hardware MMF1311M0916M25 Hex Standoff M2.5x0.45

Product Description

The ELECTRO HARDWARE MMF1311M0916M25 is a male-female hex circuit board standoff designed to create fixed spacing between PCBs, mounting panels, and enclosure surfaces. Manufactured from 303 stainless steel with a bright uncoated finish, this standoff meets the QQ-S-763 federal specification for stainless steel fasteners. The hex body measures 4.5 mm across flats and provides a wrench-gripping surface for precise installation and removal. With an overall length of 13.97 mm and a body length of 10.00 mm, this standoff is suited for compact electronic assemblies where consistent board-to-surface clearance is critical. HVAC technicians, electricians, and electronics assembly professionals use this hardware when mounting control boards, relay panels, and similar circuit assemblies.

This standoff is used in applications requiring a stable, corrosion-resistant spacer between circuit boards and chassis or panel surfaces. The metric M2.5 x 0.45 thread size is common in commercial and residential electronic control assemblies, including HVAC control boards, low-voltage relay panels, and industrial enclosures. The male thread on one end passes through a mounting hole or threads into a mating standoff, while the female end accepts a screw to secure the board above. It is sold individually with a minimum order quantity of 10 units.

Key Features

• Male-female hex configuration allows stacking and secure two-point board mounting
• 303 stainless steel construction meets QQ-S-763 federal fastener specification
• Bright uncoated finish - no coating to interfere with dimensional tolerances
• Hex body at 4.5 mm across flats accepts standard metric wrenches for controlled installation
• Length tolerance of -0.150 mm to 0.150 mm ensures consistent standoff height across assemblies
• Metric M2.5 x 0.45 thread size compatible with standard metric hardware ecosystems

Compatibility

Designed as an OEM-style replacement or new-installation standoff for circuit board mounting applications requiring an M2.5 x 0.45 metric thread and a 4.5 mm hex body profile.

Installation Notes

Installation is typically performed by licensed electricians or electronics assembly technicians. Always de-energize and lock out the equipment before servicing any control board assembly. Use an appropriately sized metric wrench or hex driver on the 4.5 mm flats - do not use pliers, which can deform the hex geometry. Follow applicable NEC guidelines and equipment manufacturer instructions when mounting or replacing circuit board hardware inside electrical enclosures.